Heel building machine



' y 1936- w. R. BARCLAY ET AL.- 2,045,443

HEEL BUILDING MACHINE Filed Feb. 21, 1954 3 Sheets-Sheet 1 v Fig 1 Z Fig 3 #VVENTURE:

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July 7, 1936- w. R. BARCLAY ET AL 2,046,443 I HEEL BUILDING MACHINE Filed Fe 21, 1954 s Sheets-Sheet 2 July 7, 1936- w. R. BARCLAY ET AL HEEL BUILDING MACHINE Filed Feb. 21, 1934 5 Sheets-Sheet s L50 Fl% 0 v Patented July 7, 1936 PATENT 0'FFl C'E' -3 f HEEL BUILDING .MACHINE William Roderick Barclay, Reginald Boyd Woodcock, and Wilfrid Thomas Minett, Leicester, England, assignors to, United Shoe Machinery Corporation, Paterson, N. J., a corporation of New "Jersey Application February 21, 193-4, Serial No. 712,302

In Great Britain March 29, 1933 11 Claims.

This invention relates to heel buildingmachines and is particularly applicable to -machines of the type in which there is a mold in which lifts are assembled, by hand or otherwise, pressed firmly, and secured together to produce a heel.

Itis an object of the invention to improve such machines with a view to. increasing their accuracy and productiveness, facilitating the work of the operator, and safeguarding both the machine and the operator against injury.

It is usual in machines of this'type to apply pressure to the liftsby means of "a'presserfpad which forces the lift assemblydown into the mold and holds it there while nails are driven upward from a nail block, constituting the bottom of the mold, to secure the lifts together, and the heel often becomes stuck' so tightly in the mold that it is difficult to remove it.

One feature of the present invention consists in the provision of means for lifting the 'nail block'in the mold to eject a heel and, advantageously in addition, to present the block in a convenient position to receive the nails for the next heel. In the illustrative embodiment of the inventionshown in the accompanying drawings connections are provided between the'presser pad and the nail block whereby the lifting'of the nail block is controlled by movement of the presser padaway from the mold, the, nail block first being lifted a short distance to free the. stuck heel from the'rnold and then being lifted.

further to eject the heel. Preferably, and as a part of the invention, additional means, herein illustrated asmanually operable, is provided for dropping the nail block back to the bottom of the mold'after a fresh load of inserted in it. 7

Another feature of the invention, aiding in the production of, perfect heels, resides in nails hasbeen means, additional to the usual power mechanism for operating the nail drivers, foradvancing the driversindependently of the power mech anism to permit inspection of the'nails with.

which the nail block has been loaded, in order that the operator may readily determine with certainty that the correct number of nails will.

be driven in the proper positions.

In ordinary use r heel building machine's it is frequently necessary tochange' molds ,for others of different sizes or shapes" and still further features of the invention relateto improvements facilitating the accurate positionmechanism shown in Fig; 2; and

ing apin 30 on the latch 22.

nection with the accompanying drawings, in which 1 r Fig. 1 is a front elevation of a machine embodying the invention;

Fig. 2 is a right hand side said machine; V g 7 I Fig. 3 is a section on the line'33 in Fig.2: Fig. 4 is an elevation partly in section of part-5 of the machine upon a larger scale than that of" Figs.lto 3; Fig. 5 is a plan view, partly in section; of some of the mechanism shown in Fig. f1 and upon the same scale; Fig. '6 is a left hand side elevation 'of some of the mechanism shownin Figs. 4 and 5;

Fig. '7 isa plan view of a detail are safety elevation of the j Fig. 8 is a side elevation of the'detail shown in'FigJl. I

*Th'e illustrative heel building machine, 'whith will be described as being viewed from the front; or operators standpoint, comprises a substantially rectangular frame 2 which has rotatably' mounted in its upper portion a horizontal driving shaft 4 extending forwardly and rearwardly of the machine. The driving shaft jat-its rear end, has rotatably mounted on it a driv' ing pulley 5 which may be coupled to the driv-' ing shaft 4 by means of a single revolution, nonrepeating clutch of known construction. Secured to the upper surface of the machine frame, near the front thereof, is an upwardly project-1 ing post 8. The post 8 has in its upper end a, cylindrical nail block it), Fig. 4,, which restson a shoulder [2 formed in a vertical bore in the post} 1 8 and has formed in it a number of vertical holesthe number and relative spacing of whichdepend upon the size of the heel'to be built and' the number of nails which it is desired to drive into the lifts. The nail block Ill has'd'ep'ending from ita stem M on which is slidingly mounteda-plate it which supports the lower ends of naildrivers 18 extending upwardly into the vertical holes in the nail block H]. The plate I 6' has" extending downward fromit a short tubular portion 20 surrounding the stem M which stem ex-' tends below the said tubular portion '20. 'The". tubular portion 20 has formed in the front of it a notch which is engaged by a latch '22 slidingly mounted in a vertical plunger 24 which is mount- 59 ed to slide" in the said post 8.' Theupper end of the-plunger 24 supports'thesaid plate [6 the tubular portion 20' of which plate is received ina bore in the plunger. The latch 22 isheld in engagement with the notch in the tubular-pop 55, tion .20 by a spring 26 which, engagesa hand lever .28 pivoted on the plunger -24 and engage The stem M has at its lower end a head 15 arranged to engage the lower end of the tubular portion Z ll on the 6Q;

" plate 16; When the latch '22 isreleasedby' means of the hand-lever "from the tubularfportion 20, the nail block l0, plate 16 and drivers I8 1 roll '32 rests on a cam 36 secured to the drive j ing shaft 4 and the cam-1s 'so shapedthatay uniform rate of upward I movement is givento the plate and drivers during the nail driving. Onthe top face of the post 8 is secured a may be lifted'bodily out of' the post 8 and a -.3.

different set of these parts inserted in the vpos when a change in the size ofjheel to 'be builtis' made and, consequently, a changein the nailing is required.

The plunger 24 atits lower 'nalcams a ca'm roll 32, Fig. 2, rotatably mounted on a P1113 secured in the plunger and extending forwardly and rearwardly of the machine. The cam plate 38 Fig. 4,,which has formed in it an' 7 opening of a shape and size to receive the upper end of thenail block 10 which upper end is of a shape and size substantially conforming. I to the size of the lowest lift in 3a heel mold hereinafter referred'to and enters theopening in theplate 38 so that the upper "face of the nail block Ill is level withithe upper faceof the j plate 38 when the nail block is resting onthe shoulder J2 'inthe' bore of the post 8.

enter holes in the plate so that the plate may through the plate isa mold 40..

and size according to the shape of the heel .to be built.1,The lowermost lift placed in the mold rests on the upper face of the nailblocklll and,

38 on the post.;

it maybe Pa he 912 Fe P ;1; b P ate The opening through the moldis usually small-I er at-its lower end than at'its upper-end, the

walls being relatively inclined according to. the

' shape of theheel to be built, and the lifts are placed in the mold ,by the operator in proper order ,i. 'e., the lifts gradually'increase in size 7 .from the bottom lift in the mold to the top lift in the mold. To enable the operator, after as- V sembling the lifts in' a pile, to. conveniently place he pile in the moldthe'moldmayhave in its rear'wall a narrow gap extendingdowmward from the top of the mold. ,The lifts are Press d: d w nt e m ld: an .h ldunde 1 pressure during the nailing by .a presser pad '42 which is secured on the lower end of a plunger 44. The plunger is 50 mounted in a screw 46-that it can beomoved" up and downin the screw, fora purpose hereinafter described.- The plunger 44 is normally held in its raised positionby a spring pressed plunger-'41 mounted 7 in the screw- 46 and-engaging a recess in the. plunger 44. When the plunger 41 is withdrawn from the recess in the plunger 44 the latter and the pad 42 may be lowered towards the mold so that when a mold is being secured on thepost 8 itmay be'accurately positioned in relation to the pad. 8 The plunger 44;.has secured on .its upper end a collar 45 bywhich theplungerrm'ay be raisedl'or lowered. The screw-461s threaded through a beam 48 extending from left to rightof" the machine and secured'at each 'end to the upper ends of a pair of bars 50, 58; see'Figs. 1

and 2. The bars 58, 50 eritenddownwardly at each side" of, and closeto the sides of, the frame and are pivotally connected at their lower ends '66. The lever is,pivoted,about mideway'between'ifts' ends,'on-a.horizontal-shaft 168 rotatex they are loosely V guided, a horizontal'poreach adjusting a ."strong. spring 16 the V tween the said washer and a flange 80 formed on the adjusting rod." is a ball thrust bearing at 5| to a rearwardly"extending substantially ho'rizontal arm 52 which .is pivoted at 'its'rear end on a horizontal shaft 54 extending from right to left of themachine and secured in the framev 2 near the bottom'thereof. The screw 46 o '5 has formedinits outer surface a groove 56 ex- 'tending' lengthwise of the screw and this groove is" normallylengaged. by the end of a spring pressed plunger 58; iril'the beam 48, which plung- V er preventsjrotationgof the. screw. Byedisen-f lo gaging the plunger'58 from the groove 56 and rotating therscrew the presser pad 42 may be adjusted upwardly. or downwardly and the pitch of the screw thread'is such that asingle rotation of the screw adjustsjthe presser pad-up 15 V wardly or downwardly one eighthof, an inch,'so that the operator may be "aware. of the amount;

of ;vertic al adjustment'given to the pad by the, number of 'revolutionsgiven to" the screw; g 'onnects the 20 Pivotedj Vn'gth e pivot 5| hich iower'ends of the bars 50,150 to theforward; end ofthe arm 52 is aniup'wardly and rearwardlyf 'extending double to gmunrsoims- 1 and 2)} o The upper ehdof; the toggle 60 'ispiv otally connected'fby a horizontal'pivot-fl' ex Qfi'o'm: left to right-of the machine, to a tending secondtoggle link" 64 which extends upwardly} and forwardly and at its upperend isfpivot'ally conneetedat 65 to .theforward end of a rear f wardly extending substantially horizontal'i lever bly mountedinbearings on the machine frame andextending from left to right of the machine. The rear end of the lever 66 has pivotally con 7 nected to itz the enlarged ends'68, 88 of two upwardly extendingparallel short rods lll 'lll Figs. v 2 and 3,.whi'ch pass through openings; in which men 12 ofthe machinefranie; Theshort rods I 0, 7 10'; are screwfthreaded at their upper ends intothe lower ends of two adjusting rods, one

of which is shownatflh which adjusting rods are coaxial with'jthe short. Surrounding.

lower endof whichis supported byfthe said her-' izontal portion '12 of, thelimachin e' frame. The upper end {of .each spring engages J a Washer 118 1eose1ym5umd on the adjusting, rod and be- 82.' By rotating the adjusting rods l 4 and screwingihemup. or down on the short rods ltl'the tension ofthe strong springs 16' may be adjustedl The. enlarged ends 68 ofthe'short rods 18 haveon them leather washers' 84 whichare normally held up against the underside of the horizontal-portion 1 10mm machine frame M e by the springs ,16. The upper. end. of each; adjusting rod j 14 I has formed in it a keyway 85, and passesfthrougha wormigear 86 having in its. bore a. pin or key. which enters the -keyway in a the upper end, ofthe Rotation of the worm gear'88, therefore, rotatesthe adjusting, rod 14. f 1

' ing rods .14 and more or less shrouds the up:

per ends or the 'strdng springs isp'rne worm i gearsmesh with'worms secured to a horizontal shaft) 90 extending from. lea to right of the ,j machine and rotatably mounted in hearings in the said bracket 88 and the shaft has secured on it a hand lever 92 by which it may be rotated.

The pivot '62 which connects the two toggle links 60, 64 together has'p'ivoted on it the forward end of a. third link 94 which extends rearwardly and at its rear end is pivoted to a depending a1m 96 of a bell-crank lever. The bellcrank lever is secured on the shaft 68 on which the lever 66 is pivoted and has a second rearwardly extending arm 98 to which the lower end of an upwardly extending connecting link I06 is coupled by a universal coupling. The upper end of the connecting link I00 embraces a crank I02 on the driving shaft 4 and the crank I02 and link I00 are universally connected to allow for the swinging movement of the bell-crank lever 96, 98.

As the driving shaft 4 rotates, the arm 96 of the bell-crank lever is swung forwardly by the crank I02 and connecting link I00 and the axis of the pivot 62 is moved to a position about three-eighths of an inch in front of the plane which passes through the axes of the pivots 5| and 65. During the straightening of the toggle the presser pad 42, which has been swung by the operator from a rearward, inoperative, position to a position over the heel lifts in the mold is moved down until it engages the uppermost lift; thereafter, during continued straightening of the toggle the lifts are compressed until their resistance to compression is such that the forward end of the lever 66 moves upwardly and its rear end moves downwardly against the action of the strong springsl'6. In this way the presser pad 42 is, by power means, first moved down into engagement with the lifts in the mold and then the lifts are compressed, the pressure applied to the lifts being adjustable either by adjusting the heavy springs 16 or by adjusting the heightwise position of the presser pad 42 when it is in position over the lifts so that more or less of the straightening movement of the toggle is occupied in moving the presser pad down upon the lifts and correspondingly less or more of the said movement is occupied in compressing the strong springs. Preferably the presser pad 42 is adjusted in the beam 48, so that the pad, when it is swung forward by the operatonwill clear always by about the same amount the top of the mold and the uppermost lift in the mold, the molds varying in height accordingv to the, height of the heel to be built. move before it contacts with the uppermost lift in the mold is alwayssubstantially the same and the compression of the strong springs I6, and consequently the pressure applied to the lifts, is always substantially the same, but this pressure may readily be adjusted to suit the height of the heel or character of the material from which the lifts ,are formed by adjusting the springs 16.

While the toggle is in a substantially straightened condition, 1. e. while the axis of the pivot 62 is moving to and fro across the plane passing through the pivots 5I, the nails are driven into the lifts. During the. driving of the nails upward movement of the pad 42 is resisted by the springs 16 by which and the pad 42 a pressure of about a ton and a half is applied to the lifts.

When the presser pad 42 is swung forwardly over the lifts in the mold by the operator the bers 50 engage lugs I04, I04 extending laterally from the machine frame 2 which lugs I04 Thus the distance the presser pad has to position the bars 50 and the presser pad 42 in their forward. position, and when the bars 50 move downwardly during the straightening of the toggle 60,, 64 blocks I06, I06 secured to the inner faces of the bars pass downwardly in grooves in the sides of the frame over the up- 7 per ends of which grooves the blocks I06 swing as the bars are moved forwardly. In this way the bars are guided during their downward and upward movement and any possibility of their swinging backward as they are moved down is prevented' -The bar 50 at the left of the machine has pivoted on it on a horizontal stud I08 extending from left to right of the machine a short arm or tmnbler I10, see Figs. 1 and '6, which is'normallyheld by a spring H2 against a pin H4 in the bar 50 so that the tumbler H0 occupies an upwardly extending position parallel to the bar 50.. The post 8 in-which the nail driving mechanism is mounted has rotatably mounted in beaiings at the rear of it a horizontal shaft II6 extending from left to right of the machine. The shaft 116 has 'rotatably mounted on it a lever H6 having one arm I20 which extends forwardly from the shaft l I6 over the tumbler H0 when the 'presse'r pad 42 and bars 50 are swung forwardly. The lever II8 also has a second arm I22 which extends forwardly from the shaft H6 through an opening in the rear of the post 6 and just beneath the head 62, hereinbefore described, on the lower endof the stem I4 which I projects downwardly from the nail block I0. When the presser pad 42 and bars 50 are swung forwardly the upper end of the tumbler IIO' engages the under face of the arm I20 which both the arms I20 and I22 of the lever H8 up-' wardly, raising the nail block it above the upper surface of the plate 38 on the post 8, lifting the nailed heel, about one quarter of an inch, in

its mold. Thus power operated means is' pro-,

vided whereby a heel, which during the operation of the machine has been forced down into the mold and may have become stuck in the mold, is lifted and freed in the mold. To lift the nail block I0 and eject the nailed heel far enough to allow the operator to grasp the heel and lift it out of the mold, the arm I20, which projects over the tumbler II'0, has extending laterally from it a pin I24, Figs. l and 6, arranged to be engaged by a hooked latch I26 when the arm I20 is raised as above described. The hooked latch I26 is pivoted on a forwardly and upwardly extending arm I28 on a bell crank lever I30 secured to the shaft H6 and holds the arm I20 and the nailing block I0 in this raised position. The other arm I 32 of the bell-crank lever I36 extends upwardly and rearwardly and has secured in it an eccentrically adjustable pin I34 positioned in the path of movement of the bar 50 at the left of the machine so that as that bar is swung back, and with it the tumbler H0, the bar engages the pin I34 and swings the bell-crank lever I30 rearwardly to raise, through the hooked latch I26 and lever IIB, the nail block I0 and eject 9 firstv into the bore by' the operator. When the presser pad 42 is swung over the lifts .the sleeve may be readily removed'from the. mold. The

bell-crank lever I30 urged forwardly by'a spring I36 secured to the bell+cranklever and to the post 8, and its movementin this direc- "tion is limited by an arm I38 securedon the shaft II6, which arm engages apin I40 'in the 'erator can conveniently load the nail block with post, see Figs. 4 and 5. -When' the machine comes to rest the nail. block l0 is, held in itsraised'position bythe latch I26 so thatthe opnails. After this is done, the latch I26is rew leased from. the spin- I 24 'by swinging the latch. rearwardly onits pivot, 'against'the action of a spring I42 which urgesit forwardly, bymeans of a hand operated arm I44 on. the latch so that the nail block I0 falls into its lowest position and a fresh supply of lifts for anew heelcan be placed inthe-mold. V 1

Provision is made for driving a'single nail, if

desired, intothe lifts from the opposite end'to that into which the heel 1 building nails. are

driven as above described, i. e. 'from'aboveu The single -,nail driving means comprises a' rod I46 screw threaded at its upper end. into 'the plunger 44,v so that the rod can" be ad 'justed upwardly'and downwardly and secured in adjusted position by aset screw I48 threaded; The threaded rod I46 has sec'ured inits lowerend a driver"l50,. the lower end of which is prefer transversely through 1 the plunger 44.

ably slightly below the level of the bottom face of the'presser pad 42.. The lower end of the driver I50 passes through a sleeve I52 fslidably mounted in the plunger .44- coaxial, with jthe driver I50 and extending downwardly about three-quarters of an inch below the presser pad 42. Thesleeve I52 has formed on it aishoulder I54 which is, normally urged downwardly against a shoulder formed in the bore in the plunger 44 by' a compression spring I56, whichengages the upper end of the sleeve I52 and a shoulder on the threaded rod I46. The sleeve J52 near its. lower end has formed in it an opening extend ing from the outer face of the sleeve-"into the bore in the sleeve. Proj'ecting' through'th is opening into the. bore in the sleeveis a spring l5 8,secured to the sleeve. gThis'spring I58 is soshaped that it engages and holds in the-bore of the; sleeve a nail pushed; upwardly. head I52 isyso'adjusted that the lower end'fof the sleevev is preferably about one-quarter of an inchabove the lifts and as; the :presser pad 42 is moved down into engagement with the upper most lift in the mold the lower endof the sleeve engages the uppermost lift and the sleeve is held stationary, or substantially 0,; thereby during the continued descent of the presser pad;

During continueddescent of the pad the driver I50 pushes .the nail into' the lifts, the pad 42 moving down over the sleeve I52 and'the spring I56 above the sleeve being compressed.

The clutch through which the driving of the 7 machine is, effected: is 'controlled by a; hand lever I60 pivoted on a stud I 62secured inflthe right-hand side of the machine frame 2. The

1 7 hand lever I60 has three arms, one of which extends upwardly 'and forwardly fromthepivot.

I62 {an'd has at its outer end a hand-piece by whichit may be swungdownwardly; th "arm I64 of the handlever extends rearwardly and is connected by a link I66 and lever I68 .to the tripping mechanism of the clutch, which the heel into a positionfrom which 'the .heel "is enclosed'in the I 60 is depressed "by the operator; the clutch.

is withdrawn from over thepin204. -'When the" casing I80. When the 'lever' is permittedto engage and the driving shaft 4 makes a single revolution. Q

Thel third'arm 200 .of the lever I60 extends'i substantially horizontally forwardly aand .has on' its under side an arcuate face'202 substantially.

radialftothe pivot 5| of the bars 50, 50 when r the. beam ..48 is:in' its raised position;- The bar an at the right-hand side of the-'machinehas 0 extending laterally from it a pm .204 which,

.in front' of the forwardjend of the arm 1200.

a when the presser pad 42-isin-its fully forward 20 1 position so that only'when the bars 50am in their L fully forward position can" the hand lever I60 be actuated, The arm 200 has slidinglymounted} in it a rod 206 (Figs. 7' and 8) .which canlbeig 'moved lengthwise .of th'e arm so that itextends '25 over. the top of the pin 204 in :the' bar 50 when 7 "the presser pad been moved forward" over a V V the mold and preventsactuation of thezhanfd lever I60 to start the' rnachi'ne; -maybe done when, for instance, the operator is chang- 30 1 ing molds and in so' doing moves" the pad 42 over the' moldand moves it down, as hereinbefore described, to enable him to position the, mold ace curately beneath 'thelpad. The .rod 206'has' extending from it 'a -stud 208 which projects35 through aislot i2l0'inthe-arm 209; Thestud 208- has slidingly mounted on f it a sleeve H2 1 the reduced end of which is: held in a recess 7 in the arm 200 by a spring 2i4fwhen the rod sleeve ispulled outwardly against the. .action of: the spring 2 and the reduced end of thesleev"; thereby withdrawn from the recess inthe arm 1 250 the rod 206 may by' means of the sleeve moved outwardly of the arm 200 and heldthere by-the engagement of theend of the sleeve with the'arm; -i .1 The face 202 V on the arm- 200 and the ,rod-

206, therefore, provide meansgto prevent themai chine from being accidentallystartledat any'go;

time. M I V The machine. isprovided with aguardf2l6" which moves down infront of the presser pad and mold as the presserpad. is moved forwardly I over the mold and prevents the operator or other 55 person from having-his hand caught between the presser pad andmold when the presser pad is moved down. The guard 2I6 is pivotally con-' nected to twopairs of substantially parallelarms 218, 220, one pair of armsbeingpivoted onago bracket 22I secured to one of the bars 50 and. I

the other pair being pivoted on a bracket secured to the other bar. The pivots and arms 2I'8,'220 form'a parallel link mechanism. The

lower am 220 at the right of the machine, has

extending downwardly from itsi'hub an arm 222, therebyforming a bell-crank lever. The downwardly extending arm' 222 has connected? to it one end oflia tension': spring'224 which extends forwardlyandrat'its other end is ;con- 7 V nected to the bar. 50 at. that side of the machine so that the spring tends. to? move the, guard 215 upwardly and, because of the parallellink mechanism,,.the guard is moved upwardly sub-' stantially parallel to the bars 50. The depends 75 ing arm 222 of the bell crank lever has in its outer end a laterally extending pin 226 which enters a slot 228 extending along a rearwardly extending link 230 the rear end of which is pivoted on the bracket 88. When the bars 50 and presser pad 42 are in their forward and fully raised position the guard is down and in front of the presser pad and mold and retains substantially this position as it moves down and up again with the bars 50. The pin 226 in the depending arm 222 of the bell crank lever is at this time in engagement with the forward end of the slot 228 in the link 239 and the link 230 is holding the guard down against the action of its spring 224. When the bars 50 are swung rearwardly the pin 226 remains for a time in engagement with the forward end of the slot 228 in the link and the spring 224 moves the guard 2l6 upwardly as the bars swing back until the upper arms 2I8 engage the under side of the beam 48 after which the pin 226 moves rearwardly in the slot 228 in the link 23%]. When the bars 50 and presser pad 42 are moved forwardly the guard 2l6 remains up until the pin 226 engages the forward end of the slot 228 in the link 230 after which during the continued forward movement of the bars and presser pad the guard is moved down.

To enable the operator, when loading nails into the nail block ID, to see whether nails have been placed in all or the desired number of holes in the block means is provided whereby the nail drivers l8 may be raised so the points of the nails in the block may be raised a little above the plate 28 and the operator can see which nail holes have been filled with nails. For this purpose a lever 232 is pivoted on the shaft H6. The lever 232 has extending from it an arm 234 which extends underneath a portion 236 (Fig. 5) of the plunger 24. The lever 232 also has an arm 238 by which the arm 234 may be swung upwardly to raise the plunger 24 and drivers l8.

Having described the invention, What IS claimed as new and desired to be secured by Letters Patent is:

1. In a heel building machine, the combination of a heel mold, a movable nail block constituting the bottom of the mold, means for lifting the nail block a short distance to free a heel from the mold, and additional means for lifting the nail block further in the mold to eject the e l. h In a heel building machine, the combination of a heel mold, a movable presser pad support carrying a presser pad movable toward and away from the mold, a movable nail block constituting the bottom of the mold, and means controlled by movement of said support away from the mold for lifting the nail block in the mold to free a heel therefrom.

3. In a heel building machine, the combina-' tion, of a heel mold, a presser pad movable successively vertically and horizontally away from the mold, a movable nail block constituting the bottom of the mold, and means for lifting the nail block in the mold in successive steps during the vertical and horizontal movements, respectively, of the presser pad.

4. In a heel building machine, the combination of a heel mold, a presser pad mounted for movement toward or away from the mold in two different directions, a movable nail block constituting the bottom of the mold, means for lifting the nail block a short distance to free a heel in the mold during movement of the presser pad in one direction away from the mold, and means for lifting the nail block further in the mold to eject a heel during movement of the presser pad in the other direction away from the mold.

5. In a heel building machine, the combination of a heel mold, a presser pad movable toward and away from the mold, a movable nail block constituting the bottom of the mold, means for lifting the nail block in the mold during movement of the presser pad away from the mold and maintaining it in convenient nail receiving position, and additional means for dropping the nail block to the bottom of the mold after the nails have been inserted in it.

6. In a heel building machine, the combination of a heel mold, a movable nail block constituting the bottom of the mold, power operto eject a heel and present the block in convenient position to receive nails, and manually operable means for dropping the nail block to the bottom of the mold after the nails have been inserted in it.

7. In a heel machine, the combination of a nail block, nail drivers reciprocable through the nail block, power means for operating the drivers, and additional means for advancing the drivers at the will of the operator, independently of said power means, to permit inspection of the nails with which the block is loaded. 1

8. In a heel machine, the combination of a nail block, nail drivers reciprocable through the nail block, power means for operating the drivers, and manual means for advancing the drivers independently of said power means, to permit inspection of the nails with which the block is loaded.

9. In a heel building machine, the combinaated means for lifting the nail block in the mold tion of a heel mold, a presser pad movable into and out of register with the mold and movable toward the mold when it is in register therewith, power mechanism for moving the pad toward the mold, means for preventing application of power to the pad when it is not in register with the mold, and additional means for preventing application of power to the pad when it is in register with the mold.

10. In a heel building machine, the combination of a heel mold, a presser pad movable into and out of register with the mold and movable toward the mold when it is in register therewith, power mechanism for moving the pad toward the mold, means for permanently preventing application of power to the pad when it is not in register with the mold, and additional means, operable at will, for preventing application of power to the pad when it is in register With the mold.

11. In a heel building machine, the combination of a heel mold, a presser pad movable toward and away from the mold, power means for so moving the pad, and manually controllable means permitting the pad to be moved into the mold independently of said power means, to,

facilitate positioning of the mold. 

